 /*******************************************************************************
  * Copyright (c) 2000, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.osgi.framework.adaptor;

 import org.osgi.framework.Bundle;

 /**
  * Watches bundle lifecyle processes. This interface is different than that of
  * a BundleLisener because it gets notified before and after all lifecycle
  * changes. A bundle watcher acts as the main entry point for logging
  * bundle activity.
  * <p>
  * Note that a bundle watcher is always notified of when a lifecycle processes
  * has ended even in cases where the lifecycle process may have failed. For
  * example, if activating a bundle fails the {@link #END_ACTIVATION} flag will
  * still be sent to the bundle watcher to notify them that the activation
  * process has ended.
  * </p>
  * <p>
  * Clients may implement this interface.
  * </p>
  * @since 3.1
  */
 public interface BundleWatcher {
     /**
      * The install process is beginning for a bundle
      * @since 3.2
      */
     public static final int START_INSTALLING = 0x0001;
     /**
      * The install process has ended for a bundle
      * @since 3.2
      */
     public static final int END_INSTALLING = 0x0002;
     /**
      * The activation process is beginning for a bundle
      * @since 3.2
      */
     public static final int START_ACTIVATION = 0x0004;
     /**
      * The activation process has ended for a bundle
      * @since 3.2
      */
     public static final int END_ACTIVATION = 0x0008;
     /**
      * The deactivation process is beginning for a bundle
      * @since 3.2
      */
     public static final int START_DEACTIVATION = 0x0010;
     /**
      * The deactivation process has ended for a bundle
      * @since 3.2
      */
     public static final int END_DEACTIVATION = 0x0020;
     /**
      * The uninstallation process is beginning for a bundle
      * @since 3.2
      */
     public static final int START_UNINSTALLING = 0x0040;
     /**
      * The uninstallation process has ended for a bundle
      * @since 3.2
      */
     public static final int END_UNINSTALLING = 0x0080;

     /**
      * Receives notification that a lifecycle change is going to start or has
      * ended.
      * @param bundle the bundle for which the lifecycle change is occurring on.
      * @param type the type of lifecycle change which is occurring.
      * @see #START_INSTALLING
      * @see #END_INSTALLING
      * @see #START_ACTIVATION
      * @see #END_ACTIVATION
      * @see #START_DEACTIVATION
      * @see #END_DEACTIVATION
      * @see #START_UNINSTALLING
      * @see #END_UNINSTALLING
      * @since 3.2
      */
     public void watchBundle(Bundle bundle, int type);
 }

